segregation

In 1900, W.E.B. Du Bois named the color line as the problem of the 20th century. The color line, which still persists, is on trial this presidential election. While Donald Trump polls low among black voters, these numbers have improved slightly.

The world is full of walls. Everywhere we go, there are fences, gates, partitions and other ingeniously constructed barriers—all aimed at keeping something or someone in and keeping something or someone else out. We need walls.